the fbi says they interviewed tamerlan. they questioned members of his family, looked into public databases, and concluded they had no evidence of -- no hard evidence of islamic activity. now what's interesting -- radical islamic activity or anything cripple nal. now what's interesting in january of 2012 he gets a visa, flies to russia for six months, stays there. then he comes back to the united states and within a month he opens up this youtube account that's filled with islamic jihadi postings and radical prophecies that clearly would indicate sympathies for the jihad cause. did the fbi even notice that after having gotten this tip from the russian fsb? did they continue to monitor him? and then finally once the marathon bombing took place, did they go back right away to their databases and see what they had in their own files on radical extremists or possible radical extremists in the possible area and was there any information on tamerlan, did they notice the information they already had in their own files about tamerl